Changed from static to 11ty!

9 files changed, 1259 insertions, 0 deletions

diff --git a/node_modules/mdurl/LICENSE b/node_modules/mdurl/LICENSE
new file mode 100644
index 0000000..3b2c7bf
--- /dev/null
+++ b/node_modules/mdurl/LICENSE
@@ -0,0 +1,45 @@
+Copyright (c) 2015 Vitaly Puzrin, Alex Kocharin.
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+.parse() is based on Joyent's node.js `url` code:
+
+Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to
+deal in the Software without restriction, including without limitation the
+rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+sell copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+IN THE SOFTWARE.
diff --git a/node_modules/mdurl/README.md b/node_modules/mdurl/README.md
new file mode 100644
index 0000000..c7f9e95
--- /dev/null
+++ b/node_modules/mdurl/README.md
@@ -0,0 +1,102 @@
+# mdurl
+
+[![CI](https://github.com/markdown-it/mdurl/actions/workflows/ci.yml/badge.svg)](https://github.com/markdown-it/mdurl/actions/workflows/ci.yml)
+[![NPM version](https://img.shields.io/npm/v/mdurl.svg?style=flat)](https://www.npmjs.org/package/mdurl)
+
+> URL utilities for [markdown-it](https://github.com/markdown-it/markdown-it) parser.
+
+
+## API
+
+### .encode(str [, exclude, keepEncoded]) -> String
+
+Percent-encode a string, avoiding double encoding. Don't touch `/a-zA-Z0-9/` +
+excluded chars + `/%[a-fA-F0-9]{2}/` (if not disabled). Broken surrorates are
+replaced with `U+FFFD`.
+
+Params:
+
+- __str__ - input string.
+- __exclude__ - optional, `;/?:@&=+$,-_.!~*'()#`. Additional chars to keep intact
+  (except `/a-zA-Z0-9/`).
+- __keepEncoded__ - optional, `true`. By default it skips already encoded sequences
+  (`/%[a-fA-F0-9]{2}/`). If set to `false`, `%` will be encoded.
+
+
+### encode.defaultChars, encode.componentChars
+
+You can use these constants as second argument to `encode` function.
+
+ - `encode.defaultChars` is the same exclude set as in the standard `encodeURI()` function
+ - `encode.componentChars` is the same exclude set as in the `encodeURIComponent()` function
+
+For example, `encode('something', encode.componentChars, true)` is roughly the equivalent of
+the `encodeURIComponent()` function (except `encode()` doesn't throw).
+
+
+### .decode(str [, exclude]) -> String
+
+Decode percent-encoded string. Invalid percent-encoded sequences (e.g. `%2G`)
+are left as is. Invalid UTF-8 characters are replaced with `U+FFFD`.
+
+
+Params:
+
+- __str__ - input string.
+- __exclude__ - set of characters to leave encoded, optional, `;/?:@&=+$,#`.
+
+
+### decode.defaultChars, decode.componentChars
+
+You can use these constants as second argument to `decode` function.
+
+ - `decode.defaultChars` is the same exclude set as in the standard `decodeURI()` function
+ - `decode.componentChars` is the same exclude set as in the `decodeURIComponent()` function
+
+For example, `decode('something', decode.defaultChars)` has the same behavior as
+`decodeURI('something')` on a correctly encoded input.
+
+
+### .parse(url, slashesDenoteHost) -> urlObs
+
+Parse url string. Similar to node's [url.parse](http://nodejs.org/api/url.html#url_url_parse_urlstr_parsequerystring_slashesdenotehost), but without any
+normalizations and query string parse.
+
+ - __url__ - input url (string)
+ - __slashesDenoteHost__ - if url starts with `//`, expect a hostname after it. Optional, `false`.
+
+Result (hash):
+
+- protocol
+- slashes
+- auth
+- port
+- hostname
+- hash
+- search
+- pathname
+
+Difference with node's `url`:
+
+1. No leading slash in paths, e.g. in `url.parse('http://foo?bar')` pathname is
+   ``, not `/`
+2. Backslashes are not replaced with slashes, so `http:\\example.org\` is
+   treated like a relative path
+3. Trailing colon is treated like a part of the path, i.e. in
+   `http://example.org:foo` pathname is `:foo`
+4. Nothing is URL-encoded in the resulting object, (in joyent/node some chars
+   in auth and paths are encoded)
+5. `url.parse()` does not have `parseQueryString` argument
+6. Removed extraneous result properties: `host`, `path`, `query`, etc.,
+   which can be constructed using other parts of the url.
+
+
+### .format(urlObject)
+
+Format an object previously obtained with `.parse()` function. Similar to node's
+[url.format](http://nodejs.org/api/url.html#url_url_format_urlobj).
+
+
+## License
+
+[MIT](https://github.com/markdown-it/mdurl/blob/master/LICENSE)
diff --git a/node_modules/mdurl/build/index.cjs.js b/node_modules/mdurl/build/index.cjs.js
new file mode 100644
index 0000000..bfa6f01
--- /dev/null
+++ b/node_modules/mdurl/build/index.cjs.js
@@ -0,0 +1,534 @@
+'use strict';
+
+/* eslint-disable no-bitwise */
+
+const decodeCache = {};
+
+function getDecodeCache (exclude) {
+  let cache = decodeCache[exclude];
+  if (cache) { return cache }
+
+  cache = decodeCache[exclude] = [];
+
+  for (let i = 0; i < 128; i++) {
+    const ch = String.fromCharCode(i);
+    cache.push(ch);
+  }
+
+  for (let i = 0; i < exclude.length; i++) {
+    const ch = exclude.charCodeAt(i);
+    cache[ch] = '%' + ('0' + ch.toString(16).toUpperCase()).slice(-2);
+  }
+
+  return cache
+}
+
+// Decode percent-encoded string.
+//
+function decode (string, exclude) {
+  if (typeof exclude !== 'string') {
+    exclude = decode.defaultChars;
+  }
+
+  const cache = getDecodeCache(exclude);
+
+  return string.replace(/(%[a-f0-9]{2})+/gi, function (seq) {
+    let result = '';
+
+    for (let i = 0, l = seq.length; i < l; i += 3) {
+      const b1 = parseInt(seq.slice(i + 1, i + 3), 16);
+
+      if (b1 < 0x80) {
+        result += cache[b1];
+        continue
+      }
+
+      if ((b1 & 0xE0) === 0xC0 && (i + 3 < l)) {
+        // 110xxxxx 10xxxxxx
+        const b2 = parseInt(seq.slice(i + 4, i + 6), 16);
+
+        if ((b2 & 0xC0) === 0x80) {
+          const chr = ((b1 << 6) & 0x7C0) | (b2 & 0x3F);
+
+          if (chr < 0x80) {
+            result += '\ufffd\ufffd';
+          } else {
+            result += String.fromCharCode(chr);
+          }
+
+          i += 3;
+          continue
+        }
+      }
+
+      if ((b1 & 0xF0) === 0xE0 && (i + 6 < l)) {
+        // 1110xxxx 10xxxxxx 10xxxxxx
+        const b2 = parseInt(seq.slice(i + 4, i + 6), 16);
+        const b3 = parseInt(seq.slice(i + 7, i + 9), 16);
+
+        if ((b2 & 0xC0) === 0x80 && (b3 & 0xC0) === 0x80) {
+          const chr = ((b1 << 12) & 0xF000) | ((b2 << 6) & 0xFC0) | (b3 & 0x3F);
+
+          if (chr < 0x800 || (chr >= 0xD800 && chr <= 0xDFFF)) {
+            result += '\ufffd\ufffd\ufffd';
+          } else {
+            result += String.fromCharCode(chr);
+          }
+
+          i += 6;
+          continue
+        }
+      }
+
+      if ((b1 & 0xF8) === 0xF0 && (i + 9 < l)) {
+        // 111110xx 10xxxxxx 10xxxxxx 10xxxxxx
+        const b2 = parseInt(seq.slice(i + 4, i + 6), 16);
+        const b3 = parseInt(seq.slice(i + 7, i + 9), 16);
+        const b4 = parseInt(seq.slice(i + 10, i + 12), 16);
+
+        if ((b2 & 0xC0) === 0x80 && (b3 & 0xC0) === 0x80 && (b4 & 0xC0) === 0x80) {
+          let chr = ((b1 << 18) & 0x1C0000) | ((b2 << 12) & 0x3F000) | ((b3 << 6) & 0xFC0) | (b4 & 0x3F);
+
+          if (chr < 0x10000 || chr > 0x10FFFF) {
+            result += '\ufffd\ufffd\ufffd\ufffd';
+          } else {
+            chr -= 0x10000;
+            result += String.fromCharCode(0xD800 + (chr >> 10), 0xDC00 + (chr & 0x3FF));
+          }
+
+          i += 9;
+          continue
+        }
+      }
+
+      result += '\ufffd';
+    }
+
+    return result
+  })
+}
+
+decode.defaultChars = ';/?:@&=+$,#';
+decode.componentChars = '';
+
+const encodeCache = {};
+
+// Create a lookup array where anything but characters in `chars` string
+// and alphanumeric chars is percent-encoded.
+//
+function getEncodeCache (exclude) {
+  let cache = encodeCache[exclude];
+  if (cache) { return cache }
+
+  cache = encodeCache[exclude] = [];
+
+  for (let i = 0; i < 128; i++) {
+    const ch = String.fromCharCode(i);
+
+    if (/^[0-9a-z]$/i.test(ch)) {
+      // always allow unencoded alphanumeric characters
+      cache.push(ch);
+    } else {
+      cache.push('%' + ('0' + i.toString(16).toUpperCase()).slice(-2));
+    }
+  }
+
+  for (let i = 0; i < exclude.length; i++) {
+    cache[exclude.charCodeAt(i)] = exclude[i];
+  }
+
+  return cache
+}
+
+// Encode unsafe characters with percent-encoding, skipping already
+// encoded sequences.
+//
+//  - string       - string to encode
+//  - exclude      - list of characters to ignore (in addition to a-zA-Z0-9)
+//  - keepEscaped  - don't encode '%' in a correct escape sequence (default: true)
+//
+function encode (string, exclude, keepEscaped) {
+  if (typeof exclude !== 'string') {
+    // encode(string, keepEscaped)
+    keepEscaped = exclude;
+    exclude = encode.defaultChars;
+  }
+
+  if (typeof keepEscaped === 'undefined') {
+    keepEscaped = true;
+  }
+
+  const cache = getEncodeCache(exclude);
+  let result = '';
+
+  for (let i = 0, l = string.length; i < l; i++) {
+    const code = string.charCodeAt(i);
+
+    if (keepEscaped && code === 0x25 /* % */ && i + 2 < l) {
+      if (/^[0-9a-f]{2}$/i.test(string.slice(i + 1, i + 3))) {
+        result += string.slice(i, i + 3);
+        i += 2;
+        continue
+      }
+    }
+
+    if (code < 128) {
+      result += cache[code];
+      continue
+    }
+
+    if (code >= 0xD800 && code <= 0xDFFF) {
+      if (code >= 0xD800 && code <= 0xDBFF && i + 1 < l) {
+        const nextCode = string.charCodeAt(i + 1);
+        if (nextCode >= 0xDC00 && nextCode <= 0xDFFF) {
+          result += encodeURIComponent(string[i] + string[i + 1]);
+          i++;
+          continue
+        }
+      }
+      result += '%EF%BF%BD';
+      continue
+    }
+
+    result += encodeURIComponent(string[i]);
+  }
+
+  return result
+}
+
+encode.defaultChars = ";/?:@&=+$,-_.!~*'()#";
+encode.componentChars = "-_.!~*'()";
+
+function format (url) {
+  let result = '';
+
+  result += url.protocol || '';
+  result += url.slashes ? '//' : '';
+  result += url.auth ? url.auth + '@' : '';
+
+  if (url.hostname && url.hostname.indexOf(':') !== -1) {
+    // ipv6 address
+    result += '[' + url.hostname + ']';
+  } else {
+    result += url.hostname || '';
+  }
+
+  result += url.port ? ':' + url.port : '';
+  result += url.pathname || '';
+  result += url.search || '';
+  result += url.hash || '';
+
+  return result
+}
+
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+//
+// Changes from joyent/node:
+//
+// 1. No leading slash in paths,
+//    e.g. in `url.parse('http://foo?bar')` pathname is ``, not `/`
+//
+// 2. Backslashes are not replaced with slashes,
+//    so `http:\\example.org\` is treated like a relative path
+//
+// 3. Trailing colon is treated like a part of the path,
+//    i.e. in `http://example.org:foo` pathname is `:foo`
+//
+// 4. Nothing is URL-encoded in the resulting object,
+//    (in joyent/node some chars in auth and paths are encoded)
+//
+// 5. `url.parse()` does not have `parseQueryString` argument
+//
+// 6. Removed extraneous result properties: `host`, `path`, `query`, etc.,
+//    which can be constructed using other parts of the url.
+//
+
+function Url () {
+  this.protocol = null;
+  this.slashes = null;
+  this.auth = null;
+  this.port = null;
+  this.hostname = null;
+  this.hash = null;
+  this.search = null;
+  this.pathname = null;
+}
+
+// Reference: RFC 3986, RFC 1808, RFC 2396
+
+// define these here so at least they only have to be
+// compiled once on the first module load.
+const protocolPattern = /^([a-z0-9.+-]+:)/i;
+const portPattern = /:[0-9]*$/;
+
+// Special case for a simple path URL
+/* eslint-disable-next-line no-useless-escape */
+const simplePathPattern = /^(\/\/?(?!\/)[^\?\s]*)(\?[^\s]*)?$/;
+
+// RFC 2396: characters reserved for delimiting URLs.
+// We actually just auto-escape these.
+const delims = ['<', '>', '"', '`', ' ', '\r', '\n', '\t'];
+
+// RFC 2396: characters not allowed for various reasons.
+const unwise = ['{', '}', '|', '\\', '^', '`'].concat(delims);
+
+// Allowed by RFCs, but cause of XSS attacks.  Always escape these.
+const autoEscape = ['\''].concat(unwise);
+// Characters that are never ever allowed in a hostname.
+// Note that any invalid chars are also handled, but these
+// are the ones that are *expected* to be seen, so we fast-path
+// them.
+const nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape);
+const hostEndingChars = ['/', '?', '#'];
+const hostnameMaxLen = 255;
+const hostnamePartPattern = /^[+a-z0-9A-Z_-]{0,63}$/;
+const hostnamePartStart = /^([+a-z0-9A-Z_-]{0,63})(.*)$/;
+// protocols that can allow "unsafe" and "unwise" chars.
+// protocols that never have a hostname.
+const hostlessProtocol = {
+  javascript: true,
+  'javascript:': true
+};
+// protocols that always contain a // bit.
+const slashedProtocol = {
+  http: true,
+  https: true,
+  ftp: true,
+  gopher: true,
+  file: true,
+  'http:': true,
+  'https:': true,
+  'ftp:': true,
+  'gopher:': true,
+  'file:': true
+};
+
+function urlParse (url, slashesDenoteHost) {
+  if (url && url instanceof Url) return url
+
+  const u = new Url();
+  u.parse(url, slashesDenoteHost);
+  return u
+}
+
+Url.prototype.parse = function (url, slashesDenoteHost) {
+  let lowerProto, hec, slashes;
+  let rest = url;
+
+  // trim before proceeding.
+  // This is to support parse stuff like "  http://foo.com  \n"
+  rest = rest.trim();
+
+  if (!slashesDenoteHost && url.split('#').length === 1) {
+    // Try fast path regexp
+    const simplePath = simplePathPattern.exec(rest);
+    if (simplePath) {
+      this.pathname = simplePath[1];
+      if (simplePath[2]) {
+        this.search = simplePath[2];
+      }
+      return this
+    }
+  }
+
+  let proto = protocolPattern.exec(rest);
+  if (proto) {
+    proto = proto[0];
+    lowerProto = proto.toLowerCase();
+    this.protocol = proto;
+    rest = rest.substr(proto.length);
+  }
+
+  // figure out if it's got a host
+  // user@server is *always* interpreted as a hostname, and url
+  // resolution will treat //foo/bar as host=foo,path=bar because that's
+  // how the browser resolves relative URLs.
+  /* eslint-disable-next-line no-useless-escape */
+  if (slashesDenoteHost || proto || rest.match(/^\/\/[^@\/]+@[^@\/]+/)) {
+    slashes = rest.substr(0, 2) === '//';
+    if (slashes && !(proto && hostlessProtocol[proto])) {
+      rest = rest.substr(2);
+      this.slashes = true;
+    }
+  }
+
+  if (!hostlessProtocol[proto] &&
+      (slashes || (proto && !slashedProtocol[proto]))) {
+    // there's a hostname.
+    // the first instance of /, ?, ;, or # ends the host.
+    //
+    // If there is an @ in the hostname, then non-host chars *are* allowed
+    // to the left of the last @ sign, unless some host-ending character
+    // comes *before* the @-sign.
+    // URLs are obnoxious.
+    //
+    // ex:
+    // http://a@b@c/ => user:a@b host:c
+    // http://a@b?@c => user:a host:c path:/?@c
+
+    // v0.12 TODO(isaacs): This is not quite how Chrome does things.
+    // Review our test case against browsers more comprehensively.
+
+    // find the first instance of any hostEndingChars
+    let hostEnd = -1;
+    for (let i = 0; i < hostEndingChars.length; i++) {
+      hec = rest.indexOf(hostEndingChars[i]);
+      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd)) {
+        hostEnd = hec;
+      }
+    }
+
+    // at this point, either we have an explicit point where the
+    // auth portion cannot go past, or the last @ char is the decider.
+    let auth, atSign;
+    if (hostEnd === -1) {
+      // atSign can be anywhere.
+      atSign = rest.lastIndexOf('@');
+    } else {
+      // atSign must be in auth portion.
+      // http://a@b/c@d => host:b auth:a path:/c@d
+      atSign = rest.lastIndexOf('@', hostEnd);
+    }
+
+    // Now we have a portion which is definitely the auth.
+    // Pull that off.
+    if (atSign !== -1) {
+      auth = rest.slice(0, atSign);
+      rest = rest.slice(atSign + 1);
+      this.auth = auth;
+    }
+
+    // the host is the remaining to the left of the first non-host char
+    hostEnd = -1;
+    for (let i = 0; i < nonHostChars.length; i++) {
+      hec = rest.indexOf(nonHostChars[i]);
+      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd)) {
+        hostEnd = hec;
+      }
+    }
+    // if we still have not hit it, then the entire thing is a host.
+    if (hostEnd === -1) {
+      hostEnd = rest.length;
+    }
+
+    if (rest[hostEnd - 1] === ':') { hostEnd--; }
+    const host = rest.slice(0, hostEnd);
+    rest = rest.slice(hostEnd);
+
+    // pull out port.
+    this.parseHost(host);
+
+    // we've indicated that there is a hostname,
+    // so even if it's empty, it has to be present.
+    this.hostname = this.hostname || '';
+
+    // if hostname begins with [ and ends with ]
+    // assume that it's an IPv6 address.
+    const ipv6Hostname = this.hostname[0] === '[' &&
+        this.hostname[this.hostname.length - 1] === ']';
+
+    // validate a little.
+    if (!ipv6Hostname) {
+      const hostparts = this.hostname.split(/\./);
+      for (let i = 0, l = hostparts.length; i < l; i++) {
+        const part = hostparts[i];
+        if (!part) { continue }
+        if (!part.match(hostnamePartPattern)) {
+          let newpart = '';
+          for (let j = 0, k = part.length; j < k; j++) {
+            if (part.charCodeAt(j) > 127) {
+              // we replace non-ASCII char with a temporary placeholder
+              // we need this to make sure size of hostname is not
+              // broken by replacing non-ASCII by nothing
+              newpart += 'x';
+            } else {
+              newpart += part[j];
+            }
+          }
+          // we test again with ASCII char only
+          if (!newpart.match(hostnamePartPattern)) {
+            const validParts = hostparts.slice(0, i);
+            const notHost = hostparts.slice(i + 1);
+            const bit = part.match(hostnamePartStart);
+            if (bit) {
+              validParts.push(bit[1]);
+              notHost.unshift(bit[2]);
+            }
+            if (notHost.length) {
+              rest = notHost.join('.') + rest;
+            }
+            this.hostname = validParts.join('.');
+            break
+          }
+        }
+      }
+    }
+
+    if (this.hostname.length > hostnameMaxLen) {
+      this.hostname = '';
+    }
+
+    // strip [ and ] from the hostname
+    // the host field still retains them, though
+    if (ipv6Hostname) {
+      this.hostname = this.hostname.substr(1, this.hostname.length - 2);
+    }
+  }
+
+  // chop off from the tail first.
+  const hash = rest.indexOf('#');
+  if (hash !== -1) {
+    // got a fragment string.
+    this.hash = rest.substr(hash);
+    rest = rest.slice(0, hash);
+  }
+  const qm = rest.indexOf('?');
+  if (qm !== -1) {
+    this.search = rest.substr(qm);
+    rest = rest.slice(0, qm);
+  }
+  if (rest) { this.pathname = rest; }
+  if (slashedProtocol[lowerProto] &&
+      this.hostname && !this.pathname) {
+    this.pathname = '';
+  }
+
+  return this
+};
+
+Url.prototype.parseHost = function (host) {
+  let port = portPattern.exec(host);
+  if (port) {
+    port = port[0];
+    if (port !== ':') {
+      this.port = port.substr(1);
+    }
+    host = host.substr(0, host.length - port.length);
+  }
+  if (host) { this.hostname = host; }
+};
+
+exports.decode = decode;
+exports.encode = encode;
+exports.format = format;
+exports.parse = urlParse;
diff --git a/node_modules/mdurl/index.mjs b/node_modules/mdurl/index.mjs
new file mode 100644
index 0000000..fd78c37
--- /dev/null
+++ b/node_modules/mdurl/index.mjs
@@ -0,0 +1,11 @@
+import decode from './lib/decode.mjs'
+import encode from './lib/encode.mjs'
+import format from './lib/format.mjs'
+import parse from './lib/parse.mjs'
+
+export {
+  decode,
+  encode,
+  format,
+  parse
+}
diff --git a/node_modules/mdurl/lib/decode.mjs b/node_modules/mdurl/lib/decode.mjs
new file mode 100644
index 0000000..9fdc133
--- /dev/null
+++ b/node_modules/mdurl/lib/decode.mjs
@@ -0,0 +1,112 @@
+/* eslint-disable no-bitwise */
+
+const decodeCache = {}
+
+function getDecodeCache (exclude) {
+  let cache = decodeCache[exclude]
+  if (cache) { return cache }
+
+  cache = decodeCache[exclude] = []
+
+  for (let i = 0; i < 128; i++) {
+    const ch = String.fromCharCode(i)
+    cache.push(ch)
+  }
+
+  for (let i = 0; i < exclude.length; i++) {
+    const ch = exclude.charCodeAt(i)
+    cache[ch] = '%' + ('0' + ch.toString(16).toUpperCase()).slice(-2)
+  }
+
+  return cache
+}
+
+// Decode percent-encoded string.
+//
+function decode (string, exclude) {
+  if (typeof exclude !== 'string') {
+    exclude = decode.defaultChars
+  }
+
+  const cache = getDecodeCache(exclude)
+
+  return string.replace(/(%[a-f0-9]{2})+/gi, function (seq) {
+    let result = ''
+
+    for (let i = 0, l = seq.length; i < l; i += 3) {
+      const b1 = parseInt(seq.slice(i + 1, i + 3), 16)
+
+      if (b1 < 0x80) {
+        result += cache[b1]
+        continue
+      }
+
+      if ((b1 & 0xE0) === 0xC0 && (i + 3 < l)) {
+        // 110xxxxx 10xxxxxx
+        const b2 = parseInt(seq.slice(i + 4, i + 6), 16)
+
+        if ((b2 & 0xC0) === 0x80) {
+          const chr = ((b1 << 6) & 0x7C0) | (b2 & 0x3F)
+
+          if (chr < 0x80) {
+            result += '\ufffd\ufffd'
+          } else {
+            result += String.fromCharCode(chr)
+          }
+
+          i += 3
+          continue
+        }
+      }
+
+      if ((b1 & 0xF0) === 0xE0 && (i + 6 < l)) {
+        // 1110xxxx 10xxxxxx 10xxxxxx
+        const b2 = parseInt(seq.slice(i + 4, i + 6), 16)
+        const b3 = parseInt(seq.slice(i + 7, i + 9), 16)
+
+        if ((b2 & 0xC0) === 0x80 && (b3 & 0xC0) === 0x80) {
+          const chr = ((b1 << 12) & 0xF000) | ((b2 << 6) & 0xFC0) | (b3 & 0x3F)
+
+          if (chr < 0x800 || (chr >= 0xD800 && chr <= 0xDFFF)) {
+            result += '\ufffd\ufffd\ufffd'
+          } else {
+            result += String.fromCharCode(chr)
+          }
+
+          i += 6
+          continue
+        }
+      }
+
+      if ((b1 & 0xF8) === 0xF0 && (i + 9 < l)) {
+        // 111110xx 10xxxxxx 10xxxxxx 10xxxxxx
+        const b2 = parseInt(seq.slice(i + 4, i + 6), 16)
+        const b3 = parseInt(seq.slice(i + 7, i + 9), 16)
+        const b4 = parseInt(seq.slice(i + 10, i + 12), 16)
+
+        if ((b2 & 0xC0) === 0x80 && (b3 & 0xC0) === 0x80 && (b4 & 0xC0) === 0x80) {
+          let chr = ((b1 << 18) & 0x1C0000) | ((b2 << 12) & 0x3F000) | ((b3 << 6) & 0xFC0) | (b4 & 0x3F)
+
+          if (chr < 0x10000 || chr > 0x10FFFF) {
+            result += '\ufffd\ufffd\ufffd\ufffd'
+          } else {
+            chr -= 0x10000
+            result += String.fromCharCode(0xD800 + (chr >> 10), 0xDC00 + (chr & 0x3FF))
+          }
+
+          i += 9
+          continue
+        }
+      }
+
+      result += '\ufffd'
+    }
+
+    return result
+  })
+}
+
+decode.defaultChars = ';/?:@&=+$,#'
+decode.componentChars = ''
+
+export default decode
diff --git a/node_modules/mdurl/lib/encode.mjs b/node_modules/mdurl/lib/encode.mjs
new file mode 100644
index 0000000..7a0c356
--- /dev/null
+++ b/node_modules/mdurl/lib/encode.mjs
@@ -0,0 +1,89 @@
+const encodeCache = {}
+
+// Create a lookup array where anything but characters in `chars` string
+// and alphanumeric chars is percent-encoded.
+//
+function getEncodeCache (exclude) {
+  let cache = encodeCache[exclude]
+  if (cache) { return cache }
+
+  cache = encodeCache[exclude] = []
+
+  for (let i = 0; i < 128; i++) {
+    const ch = String.fromCharCode(i)
+
+    if (/^[0-9a-z]$/i.test(ch)) {
+      // always allow unencoded alphanumeric characters
+      cache.push(ch)
+    } else {
+      cache.push('%' + ('0' + i.toString(16).toUpperCase()).slice(-2))
+    }
+  }
+
+  for (let i = 0; i < exclude.length; i++) {
+    cache[exclude.charCodeAt(i)] = exclude[i]
+  }
+
+  return cache
+}
+
+// Encode unsafe characters with percent-encoding, skipping already
+// encoded sequences.
+//
+//  - string       - string to encode
+//  - exclude      - list of characters to ignore (in addition to a-zA-Z0-9)
+//  - keepEscaped  - don't encode '%' in a correct escape sequence (default: true)
+//
+function encode (string, exclude, keepEscaped) {
+  if (typeof exclude !== 'string') {
+    // encode(string, keepEscaped)
+    keepEscaped = exclude
+    exclude = encode.defaultChars
+  }
+
+  if (typeof keepEscaped === 'undefined') {
+    keepEscaped = true
+  }
+
+  const cache = getEncodeCache(exclude)
+  let result = ''
+
+  for (let i = 0, l = string.length; i < l; i++) {
+    const code = string.charCodeAt(i)
+
+    if (keepEscaped && code === 0x25 /* % */ && i + 2 < l) {
+      if (/^[0-9a-f]{2}$/i.test(string.slice(i + 1, i + 3))) {
+        result += string.slice(i, i + 3)
+        i += 2
+        continue
+      }
+    }
+
+    if (code < 128) {
+      result += cache[code]
+      continue
+    }
+
+    if (code >= 0xD800 && code <= 0xDFFF) {
+      if (code >= 0xD800 && code <= 0xDBFF && i + 1 < l) {
+        const nextCode = string.charCodeAt(i + 1)
+        if (nextCode >= 0xDC00 && nextCode <= 0xDFFF) {
+          result += encodeURIComponent(string[i] + string[i + 1])
+          i++
+          continue
+        }
+      }
+      result += '%EF%BF%BD'
+      continue
+    }
+
+    result += encodeURIComponent(string[i])
+  }
+
+  return result
+}
+
+encode.defaultChars = ";/?:@&=+$,-_.!~*'()#"
+encode.componentChars = "-_.!~*'()"
+
+export default encode
diff --git a/node_modules/mdurl/lib/format.mjs b/node_modules/mdurl/lib/format.mjs
new file mode 100644
index 0000000..4b76000
--- /dev/null
+++ b/node_modules/mdurl/lib/format.mjs
@@ -0,0 +1,21 @@
+export default function format (url) {
+  let result = ''
+
+  result += url.protocol || ''
+  result += url.slashes ? '//' : ''
+  result += url.auth ? url.auth + '@' : ''
+
+  if (url.hostname && url.hostname.indexOf(':') !== -1) {
+    // ipv6 address
+    result += '[' + url.hostname + ']'
+  } else {
+    result += url.hostname || ''
+  }
+
+  result += url.port ? ':' + url.port : ''
+  result += url.pathname || ''
+  result += url.search || ''
+  result += url.hash || ''
+
+  return result
+};
diff --git a/node_modules/mdurl/lib/parse.mjs b/node_modules/mdurl/lib/parse.mjs
new file mode 100644
index 0000000..fac5065
--- /dev/null
+++ b/node_modules/mdurl/lib/parse.mjs
@@ -0,0 +1,308 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+//
+// Changes from joyent/node:
+//
+// 1. No leading slash in paths,
+//    e.g. in `url.parse('http://foo?bar')` pathname is ``, not `/`
+//
+// 2. Backslashes are not replaced with slashes,
+//    so `http:\\example.org\` is treated like a relative path
+//
+// 3. Trailing colon is treated like a part of the path,
+//    i.e. in `http://example.org:foo` pathname is `:foo`
+//
+// 4. Nothing is URL-encoded in the resulting object,
+//    (in joyent/node some chars in auth and paths are encoded)
+//
+// 5. `url.parse()` does not have `parseQueryString` argument
+//
+// 6. Removed extraneous result properties: `host`, `path`, `query`, etc.,
+//    which can be constructed using other parts of the url.
+//
+
+function Url () {
+  this.protocol = null
+  this.slashes = null
+  this.auth = null
+  this.port = null
+  this.hostname = null
+  this.hash = null
+  this.search = null
+  this.pathname = null
+}
+
+// Reference: RFC 3986, RFC 1808, RFC 2396
+
+// define these here so at least they only have to be
+// compiled once on the first module load.
+const protocolPattern = /^([a-z0-9.+-]+:)/i
+const portPattern = /:[0-9]*$/
+
+// Special case for a simple path URL
+/* eslint-disable-next-line no-useless-escape */
+const simplePathPattern = /^(\/\/?(?!\/)[^\?\s]*)(\?[^\s]*)?$/
+
+// RFC 2396: characters reserved for delimiting URLs.
+// We actually just auto-escape these.
+const delims = ['<', '>', '"', '`', ' ', '\r', '\n', '\t']
+
+// RFC 2396: characters not allowed for various reasons.
+const unwise = ['{', '}', '|', '\\', '^', '`'].concat(delims)
+
+// Allowed by RFCs, but cause of XSS attacks.  Always escape these.
+const autoEscape = ['\''].concat(unwise)
+// Characters that are never ever allowed in a hostname.
+// Note that any invalid chars are also handled, but these
+// are the ones that are *expected* to be seen, so we fast-path
+// them.
+const nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape)
+const hostEndingChars = ['/', '?', '#']
+const hostnameMaxLen = 255
+const hostnamePartPattern = /^[+a-z0-9A-Z_-]{0,63}$/
+const hostnamePartStart = /^([+a-z0-9A-Z_-]{0,63})(.*)$/
+// protocols that can allow "unsafe" and "unwise" chars.
+// protocols that never have a hostname.
+const hostlessProtocol = {
+  javascript: true,
+  'javascript:': true
+}
+// protocols that always contain a // bit.
+const slashedProtocol = {
+  http: true,
+  https: true,
+  ftp: true,
+  gopher: true,
+  file: true,
+  'http:': true,
+  'https:': true,
+  'ftp:': true,
+  'gopher:': true,
+  'file:': true
+}
+
+function urlParse (url, slashesDenoteHost) {
+  if (url && url instanceof Url) return url
+
+  const u = new Url()
+  u.parse(url, slashesDenoteHost)
+  return u
+}
+
+Url.prototype.parse = function (url, slashesDenoteHost) {
+  let lowerProto, hec, slashes
+  let rest = url
+
+  // trim before proceeding.
+  // This is to support parse stuff like "  http://foo.com  \n"
+  rest = rest.trim()
+
+  if (!slashesDenoteHost && url.split('#').length === 1) {
+    // Try fast path regexp
+    const simplePath = simplePathPattern.exec(rest)
+    if (simplePath) {
+      this.pathname = simplePath[1]
+      if (simplePath[2]) {
+        this.search = simplePath[2]
+      }
+      return this
+    }
+  }
+
+  let proto = protocolPattern.exec(rest)
+  if (proto) {
+    proto = proto[0]
+    lowerProto = proto.toLowerCase()
+    this.protocol = proto
+    rest = rest.substr(proto.length)
+  }
+
+  // figure out if it's got a host
+  // user@server is *always* interpreted as a hostname, and url
+  // resolution will treat //foo/bar as host=foo,path=bar because that's
+  // how the browser resolves relative URLs.
+  /* eslint-disable-next-line no-useless-escape */
+  if (slashesDenoteHost || proto || rest.match(/^\/\/[^@\/]+@[^@\/]+/)) {
+    slashes = rest.substr(0, 2) === '//'
+    if (slashes && !(proto && hostlessProtocol[proto])) {
+      rest = rest.substr(2)
+      this.slashes = true
+    }
+  }
+
+  if (!hostlessProtocol[proto] &&
+      (slashes || (proto && !slashedProtocol[proto]))) {
+    // there's a hostname.
+    // the first instance of /, ?, ;, or # ends the host.
+    //
+    // If there is an @ in the hostname, then non-host chars *are* allowed
+    // to the left of the last @ sign, unless some host-ending character
+    // comes *before* the @-sign.
+    // URLs are obnoxious.
+    //
+    // ex:
+    // http://a@b@c/ => user:a@b host:c
+    // http://a@b?@c => user:a host:c path:/?@c
+
+    // v0.12 TODO(isaacs): This is not quite how Chrome does things.
+    // Review our test case against browsers more comprehensively.
+
+    // find the first instance of any hostEndingChars
+    let hostEnd = -1
+    for (let i = 0; i < hostEndingChars.length; i++) {
+      hec = rest.indexOf(hostEndingChars[i])
+      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd)) {
+        hostEnd = hec
+      }
+    }
+
+    // at this point, either we have an explicit point where the
+    // auth portion cannot go past, or the last @ char is the decider.
+    let auth, atSign
+    if (hostEnd === -1) {
+      // atSign can be anywhere.
+      atSign = rest.lastIndexOf('@')
+    } else {
+      // atSign must be in auth portion.
+      // http://a@b/c@d => host:b auth:a path:/c@d
+      atSign = rest.lastIndexOf('@', hostEnd)
+    }
+
+    // Now we have a portion which is definitely the auth.
+    // Pull that off.
+    if (atSign !== -1) {
+      auth = rest.slice(0, atSign)
+      rest = rest.slice(atSign + 1)
+      this.auth = auth
+    }
+
+    // the host is the remaining to the left of the first non-host char
+    hostEnd = -1
+    for (let i = 0; i < nonHostChars.length; i++) {
+      hec = rest.indexOf(nonHostChars[i])
+      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd)) {
+        hostEnd = hec
+      }
+    }
+    // if we still have not hit it, then the entire thing is a host.
+    if (hostEnd === -1) {
+      hostEnd = rest.length
+    }
+
+    if (rest[hostEnd - 1] === ':') { hostEnd-- }
+    const host = rest.slice(0, hostEnd)
+    rest = rest.slice(hostEnd)
+
+    // pull out port.
+    this.parseHost(host)
+
+    // we've indicated that there is a hostname,
+    // so even if it's empty, it has to be present.
+    this.hostname = this.hostname || ''
+
+    // if hostname begins with [ and ends with ]
+    // assume that it's an IPv6 address.
+    const ipv6Hostname = this.hostname[0] === '[' &&
+        this.hostname[this.hostname.length - 1] === ']'
+
+    // validate a little.
+    if (!ipv6Hostname) {
+      const hostparts = this.hostname.split(/\./)
+      for (let i = 0, l = hostparts.length; i < l; i++) {
+        const part = hostparts[i]
+        if (!part) { continue }
+        if (!part.match(hostnamePartPattern)) {
+          let newpart = ''
+          for (let j = 0, k = part.length; j < k; j++) {
+            if (part.charCodeAt(j) > 127) {
+              // we replace non-ASCII char with a temporary placeholder
+              // we need this to make sure size of hostname is not
+              // broken by replacing non-ASCII by nothing
+              newpart += 'x'
+            } else {
+              newpart += part[j]
+            }
+          }
+          // we test again with ASCII char only
+          if (!newpart.match(hostnamePartPattern)) {
+            const validParts = hostparts.slice(0, i)
+            const notHost = hostparts.slice(i + 1)
+            const bit = part.match(hostnamePartStart)
+            if (bit) {
+              validParts.push(bit[1])
+              notHost.unshift(bit[2])
+            }
+            if (notHost.length) {
+              rest = notHost.join('.') + rest
+            }
+            this.hostname = validParts.join('.')
+            break
+          }
+        }
+      }
+    }
+
+    if (this.hostname.length > hostnameMaxLen) {
+      this.hostname = ''
+    }
+
+    // strip [ and ] from the hostname
+    // the host field still retains them, though
+    if (ipv6Hostname) {
+      this.hostname = this.hostname.substr(1, this.hostname.length - 2)
+    }
+  }
+
+  // chop off from the tail first.
+  const hash = rest.indexOf('#')
+  if (hash !== -1) {
+    // got a fragment string.
+    this.hash = rest.substr(hash)
+    rest = rest.slice(0, hash)
+  }
+  const qm = rest.indexOf('?')
+  if (qm !== -1) {
+    this.search = rest.substr(qm)
+    rest = rest.slice(0, qm)
+  }
+  if (rest) { this.pathname = rest }
+  if (slashedProtocol[lowerProto] &&
+      this.hostname && !this.pathname) {
+    this.pathname = ''
+  }
+
+  return this
+}
+
+Url.prototype.parseHost = function (host) {
+  let port = portPattern.exec(host)
+  if (port) {
+    port = port[0]
+    if (port !== ':') {
+      this.port = port.substr(1)
+    }
+    host = host.substr(0, host.length - port.length)
+  }
+  if (host) { this.hostname = host }
+}
+
+export default urlParse
diff --git a/node_modules/mdurl/package.json b/node_modules/mdurl/package.json
new file mode 100644
index 0000000..6e89beb
--- /dev/null
+++ b/node_modules/mdurl/package.json
@@ -0,0 +1,37 @@
+{
+  "name": "mdurl",
+  "version": "2.0.0",
+  "description": "URL utilities for markdown-it",
+  "repository": "markdown-it/mdurl",
+  "license": "MIT",
+  "main": "build/index.cjs.js",
+  "module": "index.mjs",
+  "exports": {
+    ".": {
+      "require": "./build/index.cjs.js",
+      "import": "./index.mjs"
+    },
+    "./*": {
+      "require": "./*",
+      "import": "./*"
+    }
+  },
+  "scripts": {
+    "lint": "eslint .",
+    "build": "rollup -c",
+    "test": "npm run lint && npm run build && c8 --exclude build --exclude test -r text -r html -r lcov mocha",
+    "prepublishOnly": "npm run lint && npm run build"
+  },
+  "files": [
+    "index.mjs",
+    "lib/",
+    "build/"
+  ],
+  "devDependencies": {
+    "c8": "^8.0.1",
+    "eslint": "^8.54.0",
+    "eslint-config-standard": "^17.1.0",
+    "mocha": "^10.2.0",
+    "rollup": "^4.6.1"
+  }
+}